From the introduction:
What is a Thief?
First of all, there are many different types of thieves. The stereotypical view of a thief is that small cowardice person who is looking for treasure all the time. Typically weak, but lightning fast. Avoids combat at all costs and tries to find challenging items to steal. For some this is true, completely, but there are a lot of other thieves out there with different personalities. For some, pick pocketing and evasion is a way of survival, especially in the big city scene. Some, even are pure scoundrels at heart and steal and con their way to easy street, looking to do as little work as possible. In real society there is no thief the same as the next. Each having their own different abilities and specializing in different ones.